From back of book: " ... about people who made daring journeys to unknown places. It begins with the remarkable adventures of travellers in ancient times, then looks at the fascinating exploits of medieval explorers like Marco Polo. The book goes on to describe the brave voyages of discovery of the 15th and 16th centuries and how they changed the way people viewed the world. ... Dramatic accounts of intrepid polar explorers, mountaineers and astronauts bring the book up to date."